8245665428 has 96 divisors (see below), whose sum is σ = 19403021568. Its totient is φ = 2961100800.

The previous prime is 8245665409. The next prime is 8245665437.

8245665428 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4087076 + ... + 4089092.

It is an arithmetic number, because the mean of its divisors is an integer number (202114808).

Almost surely, 2^8245665428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8245665428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9701510784).

8245665428 is an abundant number, since it is smaller than the sum of its proper divisors (11157356140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8245665428 is a wasteful number, since it uses less digits than its factorization.

8245665428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073 (or 3071 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 50.

The square root of 8245665428 is about 90805.6464543918. The cubic root of 8245665428 is about 2020.2660686026.

The spelling of 8245665428 in words is "eight billion, two hundred forty-five million, six hundred sixty-five thousand, four hundred twenty-eight".